JPH02252816A - Pile driver - Google Patents

Pile driver

Info

Publication number
JPH02252816A
JPH02252816A JP7047889A JP7047889A JPH02252816A JP H02252816 A JPH02252816 A JP H02252816A JP 7047889 A JP7047889 A JP 7047889A JP 7047889 A JP7047889 A JP 7047889A JP H02252816 A JPH02252816 A JP H02252816A
Authority
JP
Japan
Prior art keywords
maya
clutch
boom
drop hammer
hammer axle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7047889A
Other languages
Japanese (ja)
Inventor
Masaya Nagashima
長島 正弥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP7047889A priority Critical patent/JPH02252816A/en
Publication of JPH02252816A publication Critical patent/JPH02252816A/en
Pending legal-status Critical Current

Links

Landscapes

  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

PURPOSE:To efficiently control operation by loosely fitting and inserting a part of a boom guide drop hammer axle in a weight guide drop hammer axle with a clutch mechanism operated by means of a hydraulic cylinder, and linking a boom to a drop hammer axle receiver to the drop hammer axle receiver in such a manner as the drop hammer axle receiver being loosely engaged to a boom guide drop hammer axle. CONSTITUTION:A hydraulic cylinder 12 attached to a drop hammer axle slide part 19, a clutch lever 13, a clutch 21, and clutch attaching plate 23 are formed in a clutch mechanism. And a drop hammer axle receiver 10 mounted on the tip part of a boom 11, a weight guide drop hammer axle 4, and a boom guide drop hammer axle 7 inserted into the drop hammer axle 4 are formed on a drop hammer axle receiving part. And the clutch 21 is applied to a hammer head 15 with the rod of a hydraulic cylinder 12 contracted, and a hammer 18 is pulled up. Moreover the rod is adversely extended, and a pile 17 is hit by releasing engagement of the clutch 21 and dropping a hammer 18. Consequently the weight guide drop hammer axle 4 can be lowered by its length driven in.

Description

【発明の詳細な説明】 (イ)発明の目的 〈産業上の利用分野〉 本発明は土木工事において矢板、パイル、H形鋼等々土
留めその他の目的で行う杭打ちに使用するセンターシャ
フト式の移動式クレーンに取付けた杭打ち機の改良に関
するものである。
[Detailed Description of the Invention] (a) Purpose of the Invention <Industrial Application Field> The present invention is a center shaft type used for driving piles such as sheet piles, piles, H-beams, etc. for earth retaining and other purposes in civil engineering work. This invention relates to the improvement of a pile driver attached to a mobile crane.

〈従来の技術について〉 従来のこの種杭打ち機においては、第1図に示すように
クラッチレバ−(13’)の基部に引綱(14)を結縛
して作業員がこれを引いてクラッチレバ−(13’)と
ハンマーヘッド(15)との量感を解除する手段を採用
していた。
<Regarding the prior art> As shown in Fig. 1, in this type of conventional pile driving machine, a tow rope (14) is tied to the base of the clutch lever (13'), and the worker pulls it to release the clutch. A means for canceling the sense of volume between the lever (13') and the hammer head (15) was adopted.

また、真矢(16)は極めて長大であるのにこの種移動
式クレーンの杭打ち機は小型機であるのが普通であった
Furthermore, although Maya (16) is extremely long, pile drivers for this type of mobile crane are usually small machines.

〈発明が解決しようとする問題点〉 上記従来の技術においては、ハンマーヘッド(15)と
クラッチレバ−(13’)との量感を解除するには引綱
(14)を杭(17)の近くで引張るので、ハンマー(
18)の重量でたわんでいたブーム(11)が跳ね上り
機械本体をはげしく振動させ又重量大なるハンマーの落
下による衝撃で機械本体の振動と相まって引綱(14)
が激しく揺動するので作業上危険がともない、又作業が
長時間にわたるので作業員が疲れて不用意に量感を解除
したりすることが暫々あり、クレーンの運転者や近くで
作業している作業員に危険が及ぶことも暫々であった。
<Problems to be Solved by the Invention> In the above conventional technology, in order to release the volume between the hammer head (15) and the clutch lever (13'), the tow rope (14) must be moved near the stake (17). Since it is pulled, use a hammer (
The boom (11), which had been bent due to the weight of the machine (18), jumped up, causing the machine body to violently vibrate, and the impact of the heavy hammer falling combined with the vibration of the machine body to cause the towline (14)
Because the crane shakes violently, it is dangerous to work, and because the work lasts a long time, the workers sometimes get tired and release the volume control inadvertently. For some time, the workers were at risk.

又、昨今特にビルや住宅密集地等々においての杭打ち作
業では作業空間の狭小化が進むと共に作業現場上空には
障害物も多くなっているという作業環境にたいして真矢
(16)が長大であるため作業に多くの障害が生ずるよ
うになってきた。
In addition, in recent years, the work environment has become increasingly narrow, especially in piling work in buildings and densely populated residential areas, where there are more and more obstacles in the air above the work site. Many obstacles have started to occur.

そこで本発明は前記のような作業上の危険の原因である
ブーム(11)のたわみを階無とし且つ引綱(14)を
排し、更には作業上空に多水の障害物が存在しても容易
に杭打ち作業が可能な杭打ち機を提供せんとするもので
ある。
Therefore, the present invention eliminates the deflection of the boom (11), which causes the above-mentioned work hazards, and eliminates the tow rope (14). It is an object of the present invention to provide a pile driver that can easily perform pile driving work.

(ロ)発明の構成について 〈問題を解決するための手段について〉次に発明の構成
について図面に従って述べることにする。
(b) Regarding the structure of the invention <Means for solving the problem> Next, the structure of the invention will be described with reference to the drawings.

本発明は、クラッチ機構(B)を取付けてなる真矢スラ
イド部(19)に油圧シリンダー(12)を取付け、当
該シリンダー(12)のロフト(20)先端にはクラッ
チレバ−(13)の基部を連結し、クラッチレバ−(1
3)の先端に設けたクラッチ(21)はレバー回転軸(
22)によりクラッチレバ−(13)と共にクラッチ取
付板(23)に回転自在に取付けである。
In the present invention, a hydraulic cylinder (12) is attached to the Maya slide part (19) to which the clutch mechanism (B) is attached, and the base of the clutch lever (13) is attached to the tip of the loft (20) of the cylinder (12). Connect the clutch lever (1
3) The clutch (21) installed at the tip of the lever rotation shaft (
22), it is rotatably attached to the clutch mounting plate (23) together with the clutch lever (13).

クラッチ保持板(23)は真矢スライド部(19)に固
装され且つ吊下げフック(24)を引掛けるリンク(2
5)を付設してあり、吊下げフック(24)にはブーム
(11)先端に設けた滑車(26)を介してワイヤー(
27)が懸は渡されるいる。
The clutch holding plate (23) is fixed to the Maya slide part (19) and has a link (2) on which the hanging hook (24) is hooked.
5) is attached, and the hanging hook (24) is connected to a wire (
27) The stake is passed.

次にウェイト案内真矢(4)は真矢受(19)に嵌挿通
され、クラッチ機構(B)の下部でハンマー(18)に
挿通されそのヘット(15)にバッカー (21)が引
掛るようになっている。
Next, the weight guide Maya (4) is inserted into the Maya holder (19), and is inserted into the hammer (18) at the bottom of the clutch mechanism (B), so that the backer (21) is hooked to the head (15). ing.

なおウェイト案内真矢(4)の上端部には、その内側及
び外側に向けてフランジ(3)が設けられている。
Note that a flange (3) is provided at the upper end of the weight guide straight arrow (4) toward the inside and outside.

次に、ブーム(11)の先端部を着装する真矢受(10
)とウェイト案内真矢(4)及びブーム案内真矢(7)
並びにブーム(11)の先端部とからなる真矢受部(A
)の構成について述べる。
Next, the Maya Uke (10) is attached to the tip of the boom (11).
), weight guide Maya (4) and boom guide Maya (7)
and the tip of the boom (11).
) is described below.

ブーム案内真矢(7)は適宜の長さを有し、その上下端
部にフランジ(5)及びフランジ(6)が形成されウェ
イト案内真矢(4)内に嵌挿可能に構成されている。真
矢受(10)はその上下端部にフランジ(8)(9)が
設けられその側面にはブーム(11)の先端部を懸装す
るブーム受(29)が設けられている。
The boom guide stringer (7) has an appropriate length, and has flanges (5) and flanges (6) formed at its upper and lower ends so that it can be inserted into the weight guide stringer (4). The arrow support (10) has flanges (8) and (9) provided at its upper and lower ends, and a boom support (29) for suspending the tip of the boom (11) is provided on the side thereof.

以上のような構造を有するウェイト案内真矢(4)の直
上に真矢受(10)を位置させブーム案内真矢(7)を
、その下フランジ(6)をウェイト案内真矢(4)内に
入れ真矢受(10)及びウェイト案内真矢(4)に嵌挿
通しブーム受(29)にブーム(11)の先端部を継着
する。然るときはブーム案内真矢(7)の上フランジ(
5)が真矢受(lO)の上フランジ(8)に接し、又真
矢受(10)の下フランジ(9)はウェイト案内真矢の
フランジ(3)に当接し、更にブーム(11)を伸ばし
てブーム案内真矢(7)を上昇させればウェイト案内真
矢(4)のフランジ(3)にブーム案内真矢(7)の下
フランジ(6)が当接してウェイト案内真矢(4)から
抜は出るようなことのない構造となっている。
Position the arrow holder (10) directly above the weight guide arrow (4) having the above-described structure, place the boom guide arrow (7) and its lower flange (6) inside the weight guide arrow (4), and place the arrow holder. (10) and the weight guide Maya (4), and attach the tip of the boom (11) to the boom receiver (29). In such a case, the upper flange of the boom guide Maya (7) (
5) is in contact with the upper flange (8) of the Maya holder (lO), and the lower flange (9) of the Maya holder (10) is in contact with the flange (3) of the weight guide Maya, and the boom (11) is further extended. When the boom guide Maya (7) is raised, the lower flange (6) of the boom guide Maya (7) will come into contact with the flange (3) of the weight guide Maya (4), and the removal will come out from the weight guide Maya (4). It has a unique structure.

即ち真矢はウェイト案内真矢(4)とブーム案内真矢(
7)とからなり、ブーム案内真矢(7)をウェイト案内
真矢(4)の上部位において内嵌挿通連設し且つ真矢受
(10)で抱持し、ブーム案内真矢(7)がウェイト案
内真矢(4)の中に挿通されている長さだけ真矢全体の
長さを長短調整可能に構成されている。
That is, Maya is weight guide Maya (4) and boom guide Maya (
7), the boom guide maya (7) is inserted into and connected to the upper part of the weight guide maya (4) and held by the maya holder (10), and the boom guide maya (7) is connected to the weight guide maya. (4) The entire length of the Maya can be adjusted by the length inserted into it.

図中(31)は油圧ホース(30)の掛車、 (32)
はクラッチ受ピンであり、(35)は杭キャップである
In the figure (31) is the hook for the hydraulic hose (30), (32)
is a clutch receiving pin, and (35) is a stake cap.

〈発明の作用について〉 本発明は上記のような構成を有するから、これを杭打ち
に使用するときは、ウェイト案内真矢(4)の先端部を
杭又は矢板或はH鋼等杭(17)の頭部に冠着又は当接
し、油圧シリンター(12)のロッド(20)を縮めて
ハンマーヘツド(15)にクラッチ(21)を掛はウィ
ンチでワイヤー(27)を巻いてハンマー(18)を適
宜距離だけ引き上げる。
<About the function of the invention> Since the present invention has the above-described configuration, when using this for piling, the tip of the weight guide Shinya (4) is connected to a pile, sheet pile, H-steel, etc. pile (17). Retract the rod (20) of the hydraulic cylinder (12), engage the clutch (21) to the hammer head (15), and then wind the wire (27) with a winch to tighten the hammer (18). Raise the appropriate distance.

次いで油圧シリンダー(12)のロット(20)を伸長
すると、クラッチレバ−(13)の基部が下方にさげら
れ、クラッチレバ−(13)の先端部がレバー回転軸(
22)を軸として上方回転し、その際当該回転軸(22
)を軸として回転するクラッチ(21)に設けであるク
ラッチ受ピン(32)に当接してこれをハネ上げるので
クラッチ(21)とハンマーヘット(15)との係合が
解除され、ハンマー(18)は落下して杭(17)を打
撃する。杭(17)はその打撃力によって地中に打ち込
まれ、打ち込まれた長さだけ杭(17)と共にウェイト
案内真矢(4)も下る。次いでワイヤー(27)を伸長
すると共に油圧シリンダー(12)のロフト(20)を
縮めハンマーヘット(15)にクラッチ(21)を掛は
ワイヤー(27)を巻いてハンマー(18)を引き上げ
前記同様の油圧シリンダー(12)の操作でハンマー 
(18)を落下させ杭打ちを続行する。
Next, when the rod (20) of the hydraulic cylinder (12) is extended, the base of the clutch lever (13) is lowered, and the tip of the clutch lever (13) is aligned with the lever rotation shaft (
22) as an axis, and at this time, the rotation axis (22)
), which is rotated around the clutch (21), contacts the clutch receiving pin (32), which is provided on the clutch (21) as an axis, and springs it up, so the engagement between the clutch (21) and the hammer head (15) is released, and the hammer head (18) ) falls and hits the stake (17). The stake (17) is driven into the ground by the impact force, and the weight guide Maya (4) also descends along with the stake (17) by the driven length. Next, the wire (27) is extended, the loft (20) of the hydraulic cylinder (12) is shortened, and the clutch (21) is engaged with the hammer head (15). Hammer by operating the hydraulic cylinder (12)
Drop (18) and continue piling.

作業現場の状況或は杭の種類及び長さによっては真矢全
体の長短を調整しなければならないが、その際はブーム
(11)を伸縮して真矢受(1o)を上下しブーム案内
真矢(7)をウェイト案内真矢(4)から引き出し又は
これを収納して調節する。
Depending on the situation at the work site or the type and length of the piles, the overall length of the Maya may need to be adjusted. In this case, extend or shorten the boom (11) to raise or lower the Maya holder (1o) and move the boom guide Maya (7). ) from the weight guide Maya (4) or store it to adjust it.

〈発明の効果について〉 本発明は以上のような構成及び作用を有するから、クラ
ッチレバ−(13)を操作するのは本機パイロットが運
転台で油圧シリンダーを操作すれば足りるので引綱(1
4)を必要とせず、従って引綱操作のための人員も不要
である。
<Effects of the Invention> Since the present invention has the above-described configuration and operation, the clutch lever (13) can be operated by the pilot of the machine by operating the hydraulic cylinder in the driver's cab.
4) is not required, and therefore no personnel are required to operate the towline.

次に、従来は真矢を長大にしなければならなかったが、
本発明の場合はウェイト案内真矢(4)の長さを、杭打
ち作業上想定されるハンマー落下の最大距離プラス成程
度の子猫さえあれば足り、ブーム案内真矢(7)はウェ
イト案内真矢(4)が安定して杭(17)上に起立可能
な長さだけウェイト案内真矢(4)内への内嵌挿部があ
れば足りる。従って真矢全体の長さを従来のそれに比し
て短くすることができ、小形クレーン車と相まって狭い
場所や上空に障害物が存在する場所での作業に適してい
る。
Next, in the past, Shinya had to be made long, but
In the case of the present invention, it is sufficient that the length of the weight guide Maya (4) is equal to the maximum distance of the hammer fall expected during pile driving work plus the length of the weight guide Maya (4). ) may be inserted into the weight guide Maya (4) by a length that allows the weight guide to stably stand up on the pile (17). Therefore, the overall length of the Maya can be made shorter than that of the conventional one, making it suitable for work in narrow spaces or in places where there are obstacles in the sky, in combination with a small crane vehicle.

次に、作業時ハンマー(18)を吊り上げる際従来は、
ハンマー(18)の重さでブーム(11)がしなってハ
ンマー(18)の落下の際衝撃と振動が大きく危険であ
ったが本発明の場合は、ハンマー(18)を吊り上げた
際ウェイト案内真矢(4)のフランジ(3)に真矢受(
10)のフランジ(9)が当接しているのでブーム(1
1)がしなるようなことがないから結果としてハンマー
(18)を落下させてもブーム(11)がその衝撃によ
って跳ね上ることもなく、従って杭打ち機が振動せず、
更に引綱(14)もないのでその揺振もなく安全に作業
を行うことができる。
Next, when lifting the hammer (18) during work, conventionally,
The boom (11) bends due to the weight of the hammer (18), and when the hammer (18) falls, the impact and vibration are large and dangerous, but in the case of the present invention, when the hammer (18) is lifted, the weight guide Maya holder (
Since the flange (9) of boom (10) is in contact with the
1) Since there is no bending, as a result, even if the hammer (18) is dropped, the boom (11) will not jump up due to the impact, and therefore the pile driver will not vibrate.
Furthermore, since there is no tow rope (14), the work can be carried out safely without shaking.

作業クレτン車を移動するときは油圧シリンダー(12
)のロット(20)を縮めクラッチ(21)をハンマー
ヘッド(15)に掛け、更にクラッチ保持板(23)に
設けた安全ピン差込み穴(33)に安全ピン(34)を
差しクラッチ(21)やクラッチレバ−(13)の不時
の回転による危険を二重に防止して行うが、ハンマー(
18)をウェイト案内真矢から取りはずしクレーン車に
載置し、図示はしないが、真矢受(lO)とウェイト案
内真矢(4)及びブーム案内真矢(7)とをそれぞれ結
縛して搬送することができる。
When moving the work crane, use the hydraulic cylinder (12
), retract the lot (20), hook the clutch (21) onto the hammer head (15), and then insert the safety pin (34) into the safety pin insertion hole (33) provided in the clutch retaining plate (23), and then tighten the clutch (21). This method doubles the danger of accidental rotation of the clutch lever (13) and the hammer (13).
18) is removed from the weight guide Maya and placed on a crane truck, and although not shown, the Maya holder (lO), the weight guide Maya (4), and the boom guide Maya (7) can be tied together and transported. can.

以上のように本発明は従来のこの種杭打ち機に比して多
くの利点を有するものである。
As described above, the present invention has many advantages over conventional pile drivers of this type.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来の杭打ち機におけるクラッチ機構、真矢、
真矢受及びハンマーの各部の構成関係を示す説明図であ
る。 、第2図は本発明杭打ち機において、ハンマーヘットと
クラッチの量感を解除した状態を示す説明図。 第3図はハンマーを吊り上げている状態を示す説明図。 第4図は真矢受部とウェイト案内真矢及び案内真矢との
構成関係を示す断面説明図。 第5図はクラッチ機構の拡大説明図。 第6図は、センターシャフト式杭打ち機の実施例でその
全体説明側面図である。 (1)・・・・・・・・・杭打ち機 (2)・・・・・・・・・クラッチ機構(3)・・・・
・・・・・ウエート案内真矢のフランジ(4)・・・・
・・・・・ウエート案内真矢(5)・・・・・・・・・
ブーム案内真矢の上フランジ(6)・・・・・・・・・
〃       下フランジ(7)・・・・・・・・・
ブーム案内真矢(8)・・・・・・・・・真矢受の上フ
ランジ(9)・・・・・・・・・真矢受の下フランジ(
10)・・・・・・・・・真矢受 (11)・・・・・・・・・ブーム (12)・・・・・・・・・油圧シリンダー(13)・
・・・・・・・・クラッチレバ−(13′戸・・・・・
従来機におけるクラッチレバ−(14)・・・・・・・
・・張綱 (15)・・・・・・・・・ハンマーヘット(16)・
・・・・・・・・真矢 (17)・・・・・・・・・杭 (18)・・・・・・・・・ハンマー (19)・・・・・・・・・真矢受スライド部(20)
・・・・・・・・・シリンダーロット第  7  図 (21)・・・・・・・・・クラッチ (22)・・・・・・・・・レバー回転軸(23)・・
・・・・・・・クラッチ保持板(24)・・・・・・・
・・吊下げフック(25)・・・・・・・・・リンク (26)・・・・・・・・・滑車(ブーム先端に設けで
ある)(27)・・・・・・・・・ワイヤー (28)・・・・・・・・・(ハンマーに設けた)真矢
挿通穴(29)・・・・・・・・・ブーム受 (30)・・・・・・・・・油圧ホース(31)・・・
・・・・・・油圧ホース掛車(32)・・・・・・・・
・クラッチ受ピン(33)・・・・・・・・・安全ピン
差込み穴(34)・・・・・・・・・安全ピン (35)・・・・・・・・・杭キャップ(A)・・・・
・・・・・真矢受部
Figure 1 shows the clutch mechanism, Maya, in a conventional pile driver.
It is an explanatory view showing the compositional relationship of each part of a true arrow holder and a hammer. , FIG. 2 is an explanatory diagram showing a state in which the volume of the hammer head and clutch is released in the pile driving machine of the present invention. FIG. 3 is an explanatory diagram showing a state in which the hammer is lifted. FIG. 4 is an explanatory cross-sectional view showing the structural relationship between the straight arrow holder, the weight guide straight arrow, and the guide straight arrow. FIG. 5 is an enlarged explanatory diagram of the clutch mechanism. FIG. 6 is an overall explanatory side view of an embodiment of the center shaft type pile driver. (1)...Pile driver (2)...Clutch mechanism (3)...
...Weight guide Maya's flange (4)...
・・・・・・Weight guide Maya (5)・・・・・・・・・
Upper flange of boom guide Maya (6)...
〃 Lower flange (7)・・・・・・・・・
Boom guide Maya (8)...... Upper flange of Maya receiver (9)...Lower flange of Maya receiver (
10)......Maiyake (11)...Boom (12)...Hydraulic cylinder (13)
......Clutch lever (13' door...)
Clutch lever (14) in conventional machine...
・・Harline (15)・・・Hammerhead (16)・
・・・・・・・・・Maya (17)・・・・・・Pile (18)・・・・・・Hammer (19)・・・・・・Maya Uke Slide Part (20)
......Cylinder lot Fig. 7 (21)...Clutch (22)...Lever rotation shaft (23)...
・・・・・・Clutch retaining plate (24)・・・・・・
...Hanging hook (25)...Link (26)...Pulley (provided at the tip of the boom) (27)...・Wire (28)......(Made in the hammer) Maya insertion hole (29)...Boom holder (30)...Hydraulic pressure Hose (31)...
・・・・・・Hydraulic hose hook (32)・・・・・・・・・
・Clutch receiving pin (33)...Safety pin insertion hole (34)...Safety pin (35)...Pile cap (A )...
・・・・・・Maya Uke Department

Claims (1)

【特許請求の範囲】[Claims] 移動式クレーンに取付けられクラッチ機構(2)を有す
るセンターシャフト式杭打ち機(1)において、クラッ
チ機構を油圧シリンダーで操作すると共に、上端にフラ
ンジ(3)を形成したウエート案内真矢(4)内に、上
下端にフンラジ(5)(6)を形成したブーム案内真矢
(7)の一部を上方から遊嵌挿通すると共に、ウエート
案内真矢(4)の上部位において上下端にフランジ(8
)(9)を有する真矢受(10)をブーム案内真矢(7
)に外遊嵌し、真矢受(10)にはブーム(11)を連
結してなることを特徴とする移動式クレーンに取付けた
杭打ち機。
In a center shaft type pile driver (1) that is attached to a mobile crane and has a clutch mechanism (2), the clutch mechanism is operated by a hydraulic cylinder, and the weight guide shaft (4) has a flange (3) formed at the upper end. Then, a part of the boom guide Maya (7) with flange radii (5) and (6) formed on the upper and lower ends is loosely inserted from above, and flanges (8) are inserted at the upper and lower ends of the weight guide Maya (4).
) (9) and the boom guide Maya (7).
), and a boom (11) is connected to a Maya holder (10).
JP7047889A 1989-03-24 1989-03-24 Pile driver Pending JPH02252816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7047889A JPH02252816A (en) 1989-03-24 1989-03-24 Pile driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7047889A JPH02252816A (en) 1989-03-24 1989-03-24 Pile driver

Publications (1)

Publication Number Publication Date
JPH02252816A true JPH02252816A (en) 1990-10-11

Family

ID=13432672

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7047889A Pending JPH02252816A (en) 1989-03-24 1989-03-24 Pile driver

Country Status (1)

Country Link
JP (1) JPH02252816A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497442U (en) * 1972-04-21 1974-01-22
JPS5542962A (en) * 1978-09-21 1980-03-26 Minoru Kuroda Expansion-type leader and construction process using same
JPS5760933B2 (en) * 1975-09-23 1982-12-22 Sekisui Chemical Co Ltd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS497442U (en) * 1972-04-21 1974-01-22
JPS5760933B2 (en) * 1975-09-23 1982-12-22 Sekisui Chemical Co Ltd
JPS5542962A (en) * 1978-09-21 1980-03-26 Minoru Kuroda Expansion-type leader and construction process using same

Similar Documents

Publication Publication Date Title
US5375664A (en) Pile driver
US20210262246A1 (en) Fall protection device
US7021867B2 (en) Method and machine for dynamic ground compaction
JP2700566B2 (en) Anabori built pillar car
JPH02252816A (en) Pile driver
KR20180126825A (en) Vibrohammer apparatus
JPS5839974B2 (en) Boring equipment for building concrete piles underground
CN206769526U (en) Jack up Multifunctional creeping gin pole
CN111535316A (en) Underground flowering pile driver matched with excavator for use
KR102099320B1 (en) Pile Driving Apparatus Equipped with Safety Device for Hammer
JP3069315B2 (en) Work method and device for leaderless auger
JP2002129566A (en) Press-in and pull-out device for pile
CN212294651U (en) Underground flowering pile driver matched with excavator for use
JPS5841232Y2 (en) Simple pile driving device
JP6494049B2 (en) Tripod pile driver
JP3224435U (en) Pile press-in and pull-out device
JP4174155B2 (en) Dynamic compaction device
JPS60195226A (en) Pile driver
JP6923014B2 (en) Work machine connecting device, connecting pin, connecting pin mounting device and disconnection method of connecting pin
JPH11335065A (en) Iron plate grip device
CN209323522U (en) A kind of after-teeming sizing device
JPS582290B2 (en) Ground dynamic consolidation method
JP3012132B2 (en) Method and apparatus for assembling ground drill
JP2020125166A (en) Rope unwinding device and rope winding method of working machine winch drum
JP2569898Y2 (en) Jig for building long steel